If I had it to do over I'd have went with the dual imputs on my m80's.Beause the amp I am using is rated 340 watts into 4 ohms with dynamic power of 640 watts at the same 4 ohm impedance and 850 watts dynamic into 2 ohms, I felt I didn't need it.the dual imputs would have provided me with down the road amplification options. For my thinking a perfect driver basket would have absolute rigidity and be totally transparent to airflow.Nobody's building it.Haven't seen a lot of driver baskets, but the one that really got my attention was was the oval driver on the polk lsim.I've got steel baskets in my speakers.Like was previously mentioned the sonic benifits of the upgrade for these speakers aren't there, unless you are pushing them right to the edge.

Both options are only good for re-sale to those who think they make a difference. Audio gear is anything but an investment unless you are buying McIntosh electronics - which are often collected.

While I agree in this application cast baskets are only different in appearance its the difference I consider to be the investment.Put 2 M80's side by side. One with cast baskets one with stamped. Now pick one...oh wait that ones a few bucks more....but...I want it. It looks cool and I feel slightly happier with them than I would otherwise.I don't get the opposition. I couldn't justify spending the $1500 without them looking as good as possible.Just my opinion.

If I had it to do over I'd have went with the dual imputs on my m80's.Beause the amp I am using is rated 340 watts into 4 ohms with dynamic power of 640 watts at the same 4 ohm impedance and 850 watts dynamic into 2 ohms, I felt I didn't need it.the dual imputs would have provided me with down the road amplification options.

But john said:

Quote:

The maximum needed on a brief peak is much more, of course, but the capacity of the amplifier's power supply section is the limiting factor, and feeding that same supply through two wires rather than one can't double the max available or increase it in any amount.

I'm confused now...mikesk, do you mean you wish you had them so you could do bi-amping(not bi-wiring)?